Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 to plain text in your browser. UTF-8 and URL-safe modes — Base64 is encoding, not encryption.
Introduction
Base64 Encoder / Decoder is a free, browser-based utility in our Encoding Tools collection. Convert strings to Base64 for data URLs, tokens, and ASCII-safe transport — or decode Base64 back to readable UTF-8. Optional URL-safe alphabet. Fast, private, and browser-based. Use this Base64 encoder / decoder to encode text for data URLs, tokens, and ASCII-safe transport, or decode Base64 back to UTF-8. Supports URL-safe Base64. Remember: Base64 is encoding, not encryption — anyone can reverse it. Everything runs locally in your browser — inputs stay on your device, with no account or upload required. Highlights include encode utf-8 text to base64.
Features
- Encode UTF-8 text to Base64
- Decode Base64 to plain text
- URL-safe Base64 mode
- Live conversion with swap
- Clear error handling for invalid input
How to use
- 1Choose Encode or Decode.
- 2Paste plain text or Base64 into the input.
- 3Optionally enable URL-safe mode.
- 4Copy the live output.
Example
Encode a greeting
InputHello DevToolsOutput
SGVsbG8gRGV2VG9vbHM=
Benefits
- Run Base64 entirely in the browser with no signup or installation.
- Keep sensitive sample data private — processing never leaves your device.
- Encode UTF-8 text to Base64
- Decode Base64 to plain text
- URL-safe Base64 mode
- Pair it with URL Encoder and HTML Encoder when your workflow needs adjacent utilities.
FAQs
Yes. Text is encoded and decoded using UTF-8 so non-ASCII characters are handled correctly.
No. Base64 is an encoding scheme for representing binary data as text. It is not encryption and should not be used for secrecy.
It replaces + and / with - and _ and omits padding, which is common in JWTs and query strings.
Yes. Base64 on EverydayDevTools is free, with no account, watermarks, or usage caps for normal interactive use.
No. Base64 runs in your browser. Your input is processed locally and is not sent to EverydayDevTools servers.
Convert strings to Base64 for data URLs, tokens, and ASCII-safe transport — or decode Base64 back to readable UTF-8. Optional URL-safe alphabet. Fast, private, and browser-based. It fits everyday encoding tools tasks when you want a fast local utility instead of installing a CLI or opening a heavy IDE feature.
Core capabilities include: Encode UTF-8 text to Base64; Decode Base64 to plain text; URL-safe Base64 mode; Live conversion with swap.
Developers often pair Base64 with URL Encoder, HTML Encoder, JWT Decoder. Open Related tools on this page for quick links.
Related guides
Learn what Base64 is, why systems use it for data URLs and tokens, how encoding differs from encryption, and when to encode or decode in the browser.
Convert text to Base64 and back for data URLs, tokens, and ASCII-safe transport - plus what Base64 is (and is not) good for.